Numb feet II

Phoned MOTI yesterday to discuss my numb feet problem. They offer (quite remarkably IMO) 28 day exchange, so I will be going there on Friday with my Asics and old pair of NB:s in hope to find a new, suitable pair. Obviously, it's difficult to know if something fits just by trying them on a treadmill for a minute or so. I've just never had this problem with NB:s before. Or at least to this extent, I've had the occasional tingly toe before, but not the whole foot. I have my eye on Newton's. Very flat shoe, ideal for a forefootrunner. Too bad Moti doesn't stock them.